55584520 has 32 divisors (see below), whose sum is σ = 128119320. Its totient is φ = 21690880.

The previous prime is 55584511. The next prime is 55584521. The reversal of 55584520 is 2548555.

It can be written as a sum of positive squares in 4 ways, for example, as 37283236 + 18301284 = 6106^2 + 4278^2 .

It is not an unprimeable number, because it can be changed into a prime (55584521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15307 + ... + 18586.

Almost surely, 2^55584520 is an apocalyptic number.

It is an amenable number.

55584520 is an abundant number, since it is smaller than the sum of its proper divisors (72534800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55584520 is a wasteful number, since it uses less digits than its factorization.

55584520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33945 (or 33941 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The square root of 55584520 is about 7455.5026658167. The cubic root of 55584520 is about 381.6377146878.

The spelling of 55584520 in words is "fifty-five million, five hundred eighty-four thousand, five hundred twenty".